I think I already tried this, and it didn't work.....I may be wrong though, so i'm trying it now.
However, what IS the fascination with youtube player? I tried it, and its not entirely full screen, and the navigation was kinda sketchy. Other then that it worked well.
With TCPMP you can go on
www.youtube.com browse the full site, and then click any video. Then a little pop-up asks if you wanna watch the video, save the video, or go to the linked page (so you can read comments instead of watching the actual video).
So, if someone has, say......a podcast every day, you can make sure your watching the newest one with TCPMP. With youtube player, you get seemingly random videos. Maybe its the newest, maybe its 3 months ago.
What I wish I could do, is link the WVD program with TCPMP. So when you click a youtube video in PIE, it automaticly goes into WVD. That for me would probably be the best solution. Because it was able to handle videos when TCPMP couldnt.......but it doesnt work from PIE.